Option 1: Delete Photos in the Photos app

You can delete photos from My Photo Stream on Photos app of iPhone, iPad, or iPod touch.

Step 1: Tap on Photo app to open it.

Step 2: Then tap the Albums tab. Select My Photo Stream.

Step 3: Tap Select to pick up one or more photos.

Step 4: Tap the Trash icon. Tap Delete Photos.

When you delete a photo from My Photo Stream on one device, it will be removed from Photos and iCloud.

Option 2: Turn off My Photo Steam on iPhone/iPad

If you choose to turn off My Photo Stream on your iPhone/iPad, all of the photos in the My Photo Stream album will be removed. This is an ideal option if you want to free up the storage space of your iPhone/iPad. But before turning off My Photo Stream, you should save any photos that you'd like to keep to your device.